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objdetect(qrcode): don't process small/non-regular images

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This commit is contained in:
Alexander Alekhin 2018-12-21 12:17:53 +03:00
parent 3d5cebb3ac
commit 2f3e06ac1f
1 changed files with 7 additions and 0 deletions
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7
modules/objdetect/src/qrcode.cpp
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@ -782,6 +782,9 @@ bool QRCodeDetector::detect(InputArray in, OutputArray points) const
Mat inarr = in.getMat();
CV_Assert(!inarr.empty());
CV_Assert(inarr.depth() == CV_8U);
if (inarr.cols <= 20 || inarr.rows <= 20)
return false; // image data is not enough for providing reliable results
int incn = inarr.channels();
if( incn == 3 || incn == 4 )
{
@ -1070,6 +1073,8 @@ cv::String QRCodeDetector::decode(InputArray in, InputArray points,
Mat inarr = in.getMat();
CV_Assert(!inarr.empty());
CV_Assert(inarr.depth() == CV_8U);
if (inarr.cols <= 20 || inarr.rows <= 20)
return cv::String(); // image data is not enough for providing reliable results
int incn = inarr.channels();
if( incn == 3 || incn == 4 )
@ -1108,6 +1113,8 @@ cv::String QRCodeDetector::detectAndDecode(InputArray in,
Mat inarr = in.getMat();
CV_Assert(!inarr.empty());
CV_Assert(inarr.depth() == CV_8U);
if (inarr.cols <= 20 || inarr.rows <= 20)
return cv::String(); // image data is not enough for providing reliable results
int incn = inarr.channels();
if( incn == 3 || incn == 4 )